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algol [13]
2 years ago
11

How do I give brainly?

Mathematics
1 answer:
aliya0001 [1]2 years ago
5 0

Answer: Did u mean brainilest? If u didnt let me know

Step-by-step explanation: UHM so 1st u have to wait until 2 people answer, then u will see a crown appear and u click it to the person who u want to give brainliest to :))

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Santos walks 2 kilometers south and then a certain number of kilometers east. He ends 5 kilometers away from his starting positi
IgorLugansk [536]

Answer:

\sqrt{21}\ km or  4.58\ km  

Step-by-step explanation:

we know that

Applying Pythagoras' Theorem, calculate how many kilometers eastward Santos walked

so

Let

x----> quantity of kilometers eastward that Santos walked

x^{2}=5^{2}-2^{2}

x^{2}=21

x=\sqrt{21}\ km ----> exact value

\sqrt{21}=4.58\ km  -----> approximate value

6 0
3 years ago
Read 2 more answers
What is the volume of the cylinder? Express the answer in terms of Pi. A cylinder with a diameter of 8 centimeters and height of
zepelin [54]

Answer:

288π

Step-by-step explanation:

The equation for the volume of a cylinder is V=πr²h

So, To do this you would plug in the values that are given.

The radius would be 4 because it is half the diameter.

And the height is 18

So V=π(4)²(18)

So you just multiply the numbers and not the pi to get 288π

6 0
3 years ago
A bicycle was originally sold for $400 was on sale for $320. what percent was the bike marked down?
Eva8 [605]
100% of the price = $400
x % of the price = $320
we need to find x

using a proportion
100 : 400 = x : 320
100 * 320 = 400 * x
32000 = 400x
x = 32000 / 400
x = 80

That means the new price is 80% of the previous price.
100% - 80% = 20%
and based on this we can make a conclusion that the discount was 20%

I hope it is clear to you, feel free to ask anything about it :)

6 0
3 years ago
Read 2 more answers
Show that the function f(x)= integral from x to 3x 1/t ft is constant on the interval (0, positive infinity)
jarptica [38.1K]
\int\limits^{3x}_x { \frac{1}{t} } \, dt
integrate to get
[ln|t|]^{3x}_x=ln|3x|-ln|x|=ln| \frac{3x}{x}| =ln |3|=ln(3)
this only is true when x>0
when x turns negative, we get -ln(3) because of math
5 0
3 years ago
points m and n are two vertices of a right triangle. they are the endpoints of the hypotenuse mn of the triangle. the third vert
Alekssandra [29.7K]

Answer:

HEY IMAGE IS BLUR

Step-by-step explanation:

4 0
3 years ago
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